This brings the total number of deployed guardsmen to about 12,000, according to a news release from the governor's office. The guardsmen will assist in search and rescue efforts for Texans in immediate danger during the storm and will help with recovery efforts in its aftermath.

“It is imperative that we do everything possible to protect the lives and safety of people across the state of Texas as we continue to face the aftermath of this storm,” Abbott said in a prepared statement. “The Texas National Guard is working closely with FEMA and federal troops to respond urgently to the growing needs of Texans who have fallen victim to Hurricane Harvey, and the activation of the entire Guard will assist in the efforts already underway."

FEMA Administrator Brock Long said FEMA will continue to coordinate federal government resources as long as needed.

"The men and women of the Texas National Guard are working around the clock to support all relief efforts from Hurricane Harvey," Maj. Gen. John F. Nichols, Texas Adjutant General, said. "We will not rest until we have made every effort to rescue all those in harm's way. We will remain here as long as we are needed."